Add 57 new questions and exercises

exercises/ansible/my_first_playbook.md

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+## Ansible - My First Playbook
+
+1. Write a playbook that will:
+  a. Install the package zlib
+  b. Create the file `/tmp/some_file`
+2. Run the playbook on a remote host

exercises/ansible/my_first_task.md

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+## Ansible - My First Task
+
+1. Write a task to create the directory ‘/tmp/new_directory’

exercises/ansible/solutions/my_first_playbook.md

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+## My first playbook - Solution
+
+1. `vi first_playbook.yml`
+
+```
+- name: Install zlib and create a file
+  hosts: some_remote_host
+  tasks:
+    - name: Install zlib
+      package:
+        name: zlib
+        state: present
+      become: yes
+    - name: Create the file /tmp/some_file
+        path: '/tmp/some_file'
+        state: touch
+```
+
+2. First, edit the inventory file: `vi /etc/ansible/hosts`
+
+```
+[some_remote_host]
+some.remoted.host.com
+```
+
+Run the playbook
+
+`ansible-playbook first_playbook.yml`

exercises/ansible/solutions/my_first_task.md

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+## My First Task - Solution
+
+```
+- name: Create a new directory
+  file:
+    path: "/tmp/new_directory"
+    state: directory
+```

exercises/devops/deploy_to_kubernetes.md

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+## Deploy to Kubernetes
+
+* Write a pipeline that will deploy an "hello world" web app to Kubernete 
+* The CI/CD system (where the pipeline resides) and the Kubernetes cluster should be on separate systems
+* The web app should be accessible remotely and only with HTTPS

exercises/devops/solutions/deploy_to_kubernetes/Jenkinsfile

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+pipeline {
+
+  agent any
+
+  stages {
+
+    stage('Checkout Source') {
+      steps {
+        git url:'https://github.com/<GITHUB_USERNAME>/<YOUR_WEB_APP_REPO>.git',
+        // credentialsId: 'creds_github',
+        branch:'master'
+      }
+    }
+    
+      stage("Build image") {
+            steps {
+                script {
+                    myapp = docker.build("<YOUR_DOCKER_USERNAME>/helloworld:${env.BUILD_ID}")
+                }
+            }
+        }
+    
+      stage("Push image") {
+            steps {
+                script {
+                    docker.withRegistry('https://registry.hub.docker.com', 'dockerhub') {
+                            myapp.push("latest")
+                            myapp.push("${env.BUILD_ID}")
+                    }
+                }
+            }
+        }
+
+    
+    stage('Deploy App') {
+      steps {
+        script {
+          sh 'ansible-playbook deploy.yml'
+        }
+      }
+    }
+
+  }
+
+}

exercises/devops/solutions/deploy_to_kubernetes/README.md

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+## Deploy to Kubernetes
+
+Note: this exercise can be solved in various ways. The solution described here is just one possible way.
+
+1. Install Jenkins on one system (follow up the standard Jenkins installation procedure)
+2. Deploy Kubernetes on a remote host (minikube can be an easy way to achieve it)
+3. Create a simple web app or [page](html)
+
+4. Create Kubernetes [resoruces](helloworld.yml) - Deployment, Service and Ingress (for HTTPS access)
+5. Create an [Ansible inventory](inventory) and insert the address of the Kubernetes cluster
+6. Write [Ansible playbook](deploy.yml) to deploy the Kubernetes resources and also generate 
+7. Create a [pipeline](Jenkinsfile)
+
+8. Run the pipeline :)
+9. Try to access the web app remotely

exercises/devops/solutions/deploy_to_kubernetes/deploy.yml

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+- name: Apply Kubernetes YAMLs
+  hosts: kubernetes
+  tasks:
+    - name: Ensure SSL related directories exist
+      file:
+        path: "{{ item }}"
+        state: directory
+      loop:
+        - "/etc/ssl/crt"
+        - "/etc/ssl/csr"
+        - "/etc/ssl/private"
+
+    - name: Generate an OpenSSL private key.
+      openssl_privatekey:
+        path: /etc/ssl/private/privkey.pem
+
+    - name: generate openssl certficate signing requests
+      openssl_csr:
+        path: /etc/ssl/csr/hello-world.app.csr
+        privatekey_path: /etc/ssl/private/privkey.pem
+        common_name: hello-world.app
+
+    - name: Generate a Self Signed OpenSSL certificate
+      openssl_certificate:
+        path: /etc/ssl/crt/hello-world.app.crt
+        privatekey_path: /etc/ssl/private/privkey.pem
+        csr_path: /etc/ssl/csr/hello-world.app.csr
+        provider: selfsigned
+
+    - name: Create k8s secret
+      command: "kubectl create secret tls tls-secret --cert=/etc/ssl/crt/hello-world.app.crt --key=/etc/ssl/private/privkey.pem"
+      register: result
+      failed_when:
+        - result.rc == 2
+          
+    - name: Deploy web app
+      k8s:
+        state: present
+        definition: "{{ lookup('file', './helloworld.yml') }}"
+        kubeconfig: '/home/abregman/.kube/config'
+        namespace: 'default'
+        wait: true

exercises/devops/solutions/deploy_to_kubernetes/helloworld.yml

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+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: hello-blue-whale
+spec:
+  replicas: 3
+  selector:
+    matchLabels:
+      app: hello-world-app
+      version: blue
+  template:
+    metadata:
+      name: hello-blue-whale-pod
+      labels:
+        app: hello-world-app
+        version: blue
+    spec:
+      containers:
+      - name: hello-whale-container
+        image: abregman2/helloworld:latest
+        imagePullPolicy: Always
+        ports:
+        - containerPort: 80
+        - containerPort: 443
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: hello-world
+  labels:
+    app: hello-world-app
+spec:
+  ports:
+  - port: 80
+    targetPort: 80
+    protocol: TCP
+    name: http
+  selector:
+    app: hello-world-app
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: example-ingress
+  annotations:
+      cert-manager.io/cluster-issuer: selfsigned-issuer
+      nginx.ingress.kubernetes.io/rewrite-target: /
+      kubernetes.io/ingress.class: nginx
+spec:
+  tls:
+  - hosts:
+      - hello-world.app
+    secretName: shhh
+  rules:
+    - host: hello-world.app
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: hello-world
+                port:
+                  number: 80

exercises/devops/solutions/deploy_to_kubernetes/html/css/normalize.css

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+/*! normalize.css v3.0.2 | MIT License | git.io/normalize */
+
+/**
+ * 1. Set default font family to sans-serif.
+ * 2. Prevent iOS text size adjust after orientation change, without disabling
+ *    user zoom.
+ */
+
+html {
+  font-family: sans-serif; /* 1 */
+  -ms-text-size-adjust: 100%; /* 2 */
+  -webkit-text-size-adjust: 100%; /* 2 */
+}
+
+/**
+ * Remove default margin.
+ */
+
+body {
+  margin: 0;
+}
+
+/* HTML5 display definitions
+   ========================================================================== */
+
+/**
+ * Correct `block` display not defined for any HTML5 element in IE 8/9.
+ * Correct `block` display not defined for `details` or `summary` in IE 10/11
+ * and Firefox.
+ * Correct `block` display not defined for `main` in IE 11.
+ */
+
+article,
+aside,
+details,
+figcaption,
+figure,
+footer,
+header,
+hgroup,
+main,
+menu,
+nav,
+section,
+summary {
+  display: block;
+}
+
+/**
+ * 1. Correct `inline-block` display not defined in IE 8/9.
+ * 2. Normalize vertical alignment of `progress` in Chrome, Firefox, and Opera.
+ */
+
+audio,
+canvas,
+progress,
+video {
+  display: inline-block; /* 1 */
+  vertical-align: baseline; /* 2 */
+}
+
+/**
+ * Prevent modern browsers from displaying `audio` without controls.
+ * Remove excess height in iOS 5 devices.
+ */
+
+audio:not([controls]) {
+  display: none;
+  height: 0;
+}
+
+/**
+ * Address `[hidden]` styling not present in IE 8/9/10.
+ * Hide the `template` element in IE 8/9/11, Safari, and Firefox < 22.
+ */
+
+[hidden],
+template {
+  display: none;
+}
+
+/* Links
+   ========================================================================== */
+
+/**
+ * Remove the gray background color from active links in IE 10.
+ */
+
+a {
+  background-color: transparent;
+}
+
+/**
+ * Improve readability when focused and also mouse hovered in all browsers.
+ */
+
+a:active,
+a:hover {
+  outline: 0;
+}
+
+/* Text-level semantics
+   ========================================================================== */
+
+/**
+ * Address styling not present in IE 8/9/10/11, Safari, and Chrome.
+ */
+
+abbr[title] {
+  border-bottom: 1px dotted;
+}
+
+/**
+ * Address style set to `bolder` in Firefox 4+, Safari, and Chrome.
+ */
+
+b,
+strong {
+  font-weight: bold;
+}
+
+/**
+ * Address styling not present in Safari and Chrome.
+ */
+
+dfn {
+  font-style: italic;
+}
+
+/**
+ * Address variable `h1` font-size and margin within `section` and `article`
+ * contexts in Firefox 4+, Safari, and Chrome.
+ */
+
+h1 {
+  font-size: 2em;
+  margin: 0.67em 0;
+}
+
+/**
+ * Address styling not present in IE 8/9.
+ */
+
+mark {
+  background: #ff0;
+  color: #000;
+}
+
+/**
+ * Address inconsistent and variable font size in all browsers.
+ */
+
+small {
+  font-size: 80%;
+}
+
+/**
+ * Prevent `sub` and `sup` affecting `line-height` in all browsers.
+ */
+
+sub,
+sup {
+  font-size: 75%;
+  line-height: 0;
+  position: relative;
+  vertical-align: baseline;
+}
+
+sup {
+  top: -0.5em;
+}
+
+sub {
+  bottom: -0.25em;
+}
+
+/* Embedded content
+   ========================================================================== */
+
+/**
+ * Remove border when inside `a` element in IE 8/9/10.
+ */
+
+img {
+  border: 0;
+}
+
+/**
+ * Correct overflow not hidden in IE 9/10/11.
+ */
+
+svg:not(:root) {
+  overflow: hidden;
+}
+
+/* Grouping content
+   ========================================================================== */
+
+/**
+ * Address margin not present in IE 8/9 and Safari.
+ */
+
+figure {
+  margin: 1em 40px;
+}
+
+/**
+ * Address differences between Firefox and other browsers.
+ */
+
+hr {
+  -moz-box-sizing: content-box;
+  box-sizing: content-box;
+  height: 0;
+}
+
+/**
+ * Contain overflow in all browsers.
+ */
+
+pre {
+  overflow: auto;
+}
+
+/**
+ * Address odd `em`-unit font size rendering in all browsers.
+ */
+
+code,
+kbd,
+pre,
+samp {
+  font-family: monospace, monospace;
+  font-size: 1em;
+}
+
+/* Forms
+   ========================================================================== */
+
+/**
+ * Known limitation: by default, Chrome and Safari on OS X allow very limited
+ * styling of `select`, unless a `border` property is set.
+ */
+
+/**
+ * 1. Correct color not being inherited.
+ *    Known issue: affects color of disabled elements.
+ * 2. Correct font properties not being inherited.
+ * 3. Address margins set differently in Firefox 4+, Safari, and Chrome.
+ */
+
+button,
+input,
+optgroup,
+select,
+textarea {
+  color: inherit; /* 1 */
+  font: inherit; /* 2 */
+  margin: 0; /* 3 */
+}
+
+/**
+ * Address `overflow` set to `hidden` in IE 8/9/10/11.
+ */
+
+button {
+  overflow: visible;
+}
+
+/**
+ * Address inconsistent `text-transform` inheritance for `button` and `select`.
+ * All other form control elements do not inherit `text-transform` values.
+ * Correct `button` style inheritance in Firefox, IE 8/9/10/11, and Opera.
+ * Correct `select` style inheritance in Firefox.
+ */
+
+button,
+select {
+  text-transform: none;
+}
+
+/**
+ * 1. Avoid the WebKit bug in Android 4.0.* where (2) destroys native `audio`
+ *    and `video` controls.
+ * 2. Correct inability to style clickable `input` types in iOS.
+ * 3. Improve usability and consistency of cursor style between image-type
+ *    `input` and others.
+ */
+
+button,
+html input[type="button"], /* 1 */
+input[type="reset"],
+input[type="submit"] {
+  -webkit-appearance: button; /* 2 */
+  cursor: pointer; /* 3 */
+}
+
+/**
+ * Re-set default cursor for disabled elements.
+ */
+
+button[disabled],
+html input[disabled] {
+  cursor: default;
+}
+
+/**
+ * Remove inner padding and border in Firefox 4+.
+ */
+
+button::-moz-focus-inner,
+input::-moz-focus-inner {
+  border: 0;
+  padding: 0;
+}
+
+/**
+ * Address Firefox 4+ setting `line-height` on `input` using `!important` in
+ * the UA stylesheet.
+ */
+
+input {
+  line-height: normal;
+}
+
+/**
+ * It's recommended that you don't attempt to style these elements.
+ * Firefox's implementation doesn't respect box-sizing, padding, or width.
+ *
+ * 1. Address box sizing set to `content-box` in IE 8/9/10.
+ * 2. Remove excess padding in IE 8/9/10.
+ */
+
+input[type="checkbox"],
+input[type="radio"] {
+  box-sizing: border-box; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Fix the cursor style for Chrome's increment/decrement buttons. For certain
+ * `font-size` values of the `input`, it causes the cursor style of the
+ * decrement button to change from `default` to `text`.
+ */
+
+input[type="number"]::-webkit-inner-spin-button,
+input[type="number"]::-webkit-outer-spin-button {
+  height: auto;
+}
+
+/**
+ * 1. Address `appearance` set to `searchfield` in Safari and Chrome.
+ * 2. Address `box-sizing` set to `border-box` in Safari and Chrome
+ *    (include `-moz` to future-proof).
+ */
+
+input[type="search"] {
+  -webkit-appearance: textfield; /* 1 */
+  -moz-box-sizing: content-box;
+  -webkit-box-sizing: content-box; /* 2 */
+  box-sizing: content-box;
+}
+
+/**
+ * Remove inner padding and search cancel button in Safari and Chrome on OS X.
+ * Safari (but not Chrome) clips the cancel button when the search input has
+ * padding (and `textfield` appearance).
+ */
+
+input[type="search"]::-webkit-search-cancel-button,
+input[type="search"]::-webkit-search-decoration {
+  -webkit-appearance: none;
+}
+
+/**
+ * Define consistent border, margin, and padding.
+ */
+
+fieldset {
+  border: 1px solid #c0c0c0;
+  margin: 0 2px;
+  padding: 0.35em 0.625em 0.75em;
+}
+
+/**
+ * 1. Correct `color` not being inherited in IE 8/9/10/11.
+ * 2. Remove padding so people aren't caught out if they zero out fieldsets.
+ */
+
+legend {
+  border: 0; /* 1 */
+  padding: 0; /* 2 */
+}
+
+/**
+ * Remove default vertical scrollbar in IE 8/9/10/11.
+ */
+
+textarea {
+  overflow: auto;
+}
+
+/**
+ * Don't inherit the `font-weight` (applied by a rule above).
+ * NOTE: the default cannot safely be changed in Chrome and Safari on OS X.
+ */
+
+optgroup {
+  font-weight: bold;
+}
+
+/* Tables
+   ========================================================================== */
+
+/**
+ * Remove most spacing between table cells.
+ */
+
+table {
+  border-collapse: collapse;
+  border-spacing: 0;
+}
+
+td,
+th {
+  padding: 0;
+}

exercises/devops/solutions/deploy_to_kubernetes/html/css/skeleton.css

@@ -0,0 +1,418 @@
+/*
+* Skeleton V2.0.4
+* Copyright 2014, Dave Gamache
+* www.getskeleton.com
+* Free to use under the MIT license.
+* http://www.opensource.org/licenses/mit-license.php
+* 12/29/2014
+*/
+
+
+/* Table of contents
+––––––––––––––––––––––––––––––––––––––––––––––––––
+- Grid
+- Base Styles
+- Typography
+- Links
+- Buttons
+- Forms
+- Lists
+- Code
+- Tables
+- Spacing
+- Utilities
+- Clearing
+- Media Queries
+*/
+
+
+/* Grid
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.container {
+  position: relative;
+  width: 100%;
+  max-width: 960px;
+  margin: 0 auto;
+  padding: 0 20px;
+  box-sizing: border-box; }
+.column,
+.columns {
+  width: 100%;
+  float: left;
+  box-sizing: border-box; }
+
+/* For devices larger than 400px */
+@media (min-width: 400px) {
+  .container {
+    width: 85%;
+    padding: 0; }
+}
+
+/* For devices larger than 550px */
+@media (min-width: 550px) {
+  .container {
+    width: 80%; }
+  .column,
+  .columns {
+    margin-left: 4%; }
+  .column:first-child,
+  .columns:first-child {
+    margin-left: 0; }
+
+  .one.column,
+  .one.columns                    { width: 4.66666666667%; }
+  .two.columns                    { width: 13.3333333333%; }
+  .three.columns                  { width: 22%;            }
+  .four.columns                   { width: 30.6666666667%; }
+  .five.columns                   { width: 39.3333333333%; }
+  .six.columns                    { width: 48%;            }
+  .seven.columns                  { width: 56.6666666667%; }
+  .eight.columns                  { width: 65.3333333333%; }
+  .nine.columns                   { width: 74.0%;          }
+  .ten.columns                    { width: 82.6666666667%; }
+  .eleven.columns                 { width: 91.3333333333%; }
+  .twelve.columns                 { width: 100%; margin-left: 0; }
+
+  .one-third.column               { width: 30.6666666667%; }
+  .two-thirds.column              { width: 65.3333333333%; }
+
+  .one-half.column                { width: 48%; }
+
+  /* Offsets */
+  .offset-by-one.column,
+  .offset-by-one.columns          { margin-left: 8.66666666667%; }
+  .offset-by-two.column,
+  .offset-by-two.columns          { margin-left: 17.3333333333%; }
+  .offset-by-three.column,
+  .offset-by-three.columns        { margin-left: 26%;            }
+  .offset-by-four.column,
+  .offset-by-four.columns         { margin-left: 34.6666666667%; }
+  .offset-by-five.column,
+  .offset-by-five.columns         { margin-left: 43.3333333333%; }
+  .offset-by-six.column,
+  .offset-by-six.columns          { margin-left: 52%;            }
+  .offset-by-seven.column,
+  .offset-by-seven.columns        { margin-left: 60.6666666667%; }
+  .offset-by-eight.column,
+  .offset-by-eight.columns        { margin-left: 69.3333333333%; }
+  .offset-by-nine.column,
+  .offset-by-nine.columns         { margin-left: 78.0%;          }
+  .offset-by-ten.column,
+  .offset-by-ten.columns          { margin-left: 86.6666666667%; }
+  .offset-by-eleven.column,
+  .offset-by-eleven.columns       { margin-left: 95.3333333333%; }
+
+  .offset-by-one-third.column,
+  .offset-by-one-third.columns    { margin-left: 34.6666666667%; }
+  .offset-by-two-thirds.column,
+  .offset-by-two-thirds.columns   { margin-left: 69.3333333333%; }
+
+  .offset-by-one-half.column,
+  .offset-by-one-half.columns     { margin-left: 52%; }
+
+}
+
+
+/* Base Styles
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+/* NOTE
+html is set to 62.5% so that all the REM measurements throughout Skeleton
+are based on 10px sizing. So basically 1.5rem = 15px :) */
+html {
+  font-size: 62.5%; }
+body {
+  font-size: 1.5em; /* currently ems cause chrome bug misinterpreting rems on body element */
+  line-height: 1.6;
+  font-weight: 400;
+  font-family: "Raleway", "HelveticaNeue", "Helvetica Neue", Helvetica, Arial, sans-serif;
+  color: #222; }
+
+
+/* Typography
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 0;
+  margin-bottom: 2rem;
+  font-weight: 300; }
+h1 { font-size: 4.0rem; line-height: 1.2;  letter-spacing: -.1rem;}
+h2 { font-size: 3.6rem; line-height: 1.25; letter-spacing: -.1rem; }
+h3 { font-size: 3.0rem; line-height: 1.3;  letter-spacing: -.1rem; }
+h4 { font-size: 2.4rem; line-height: 1.35; letter-spacing: -.08rem; }
+h5 { font-size: 1.8rem; line-height: 1.5;  letter-spacing: -.05rem; }
+h6 { font-size: 1.5rem; line-height: 1.6;  letter-spacing: 0; }
+
+/* Larger than phablet */
+@media (min-width: 550px) {
+  h1 { font-size: 5.0rem; }
+  h2 { font-size: 4.2rem; }
+  h3 { font-size: 3.6rem; }
+  h4 { font-size: 3.0rem; }
+  h5 { font-size: 2.4rem; }
+  h6 { font-size: 1.5rem; }
+}
+
+p {
+  margin-top: 0; }
+
+
+/* Links
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+a {
+  color: #1EAEDB; }
+a:hover {
+  color: #0FA0CE; }
+
+
+/* Buttons
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.button,
+button,
+input[type="submit"],
+input[type="reset"],
+input[type="button"] {
+  display: inline-block;
+  height: 38px;
+  padding: 0 30px;
+  color: #555;
+  text-align: center;
+  font-size: 11px;
+  font-weight: 600;
+  line-height: 38px;
+  letter-spacing: .1rem;
+  text-transform: uppercase;
+  text-decoration: none;
+  white-space: nowrap;
+  background-color: transparent;
+  border-radius: 4px;
+  border: 1px solid #bbb;
+  cursor: pointer;
+  box-sizing: border-box; }
+.button:hover,
+button:hover,
+input[type="submit"]:hover,
+input[type="reset"]:hover,
+input[type="button"]:hover,
+.button:focus,
+button:focus,
+input[type="submit"]:focus,
+input[type="reset"]:focus,
+input[type="button"]:focus {
+  color: #333;
+  border-color: #888;
+  outline: 0; }
+.button.button-primary,
+button.button-primary,
+input[type="submit"].button-primary,
+input[type="reset"].button-primary,
+input[type="button"].button-primary {
+  color: #FFF;
+  background-color: #33C3F0;
+  border-color: #33C3F0; }
+.button.button-primary:hover,
+button.button-primary:hover,
+input[type="submit"].button-primary:hover,
+input[type="reset"].button-primary:hover,
+input[type="button"].button-primary:hover,
+.button.button-primary:focus,
+button.button-primary:focus,
+input[type="submit"].button-primary:focus,
+input[type="reset"].button-primary:focus,
+input[type="button"].button-primary:focus {
+  color: #FFF;
+  background-color: #1EAEDB;
+  border-color: #1EAEDB; }
+
+
+/* Forms
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+input[type="email"],
+input[type="number"],
+input[type="search"],
+input[type="text"],
+input[type="tel"],
+input[type="url"],
+input[type="password"],
+textarea,
+select {
+  height: 38px;
+  padding: 6px 10px; /* The 6px vertically centers text on FF, ignored by Webkit */
+  background-color: #fff;
+  border: 1px solid #D1D1D1;
+  border-radius: 4px;
+  box-shadow: none;
+  box-sizing: border-box; }
+/* Removes awkward default styles on some inputs for iOS */
+input[type="email"],
+input[type="number"],
+input[type="search"],
+input[type="text"],
+input[type="tel"],
+input[type="url"],
+input[type="password"],
+textarea {
+  -webkit-appearance: none;
+     -moz-appearance: none;
+          appearance: none; }
+textarea {
+  min-height: 65px;
+  padding-top: 6px;
+  padding-bottom: 6px; }
+input[type="email"]:focus,
+input[type="number"]:focus,
+input[type="search"]:focus,
+input[type="text"]:focus,
+input[type="tel"]:focus,
+input[type="url"]:focus,
+input[type="password"]:focus,
+textarea:focus,
+select:focus {
+  border: 1px solid #33C3F0;
+  outline: 0; }
+label,
+legend {
+  display: block;
+  margin-bottom: .5rem;
+  font-weight: 600; }
+fieldset {
+  padding: 0;
+  border-width: 0; }
+input[type="checkbox"],
+input[type="radio"] {
+  display: inline; }
+label > .label-body {
+  display: inline-block;
+  margin-left: .5rem;
+  font-weight: normal; }
+
+
+/* Lists
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+ul {
+  list-style: circle inside; }
+ol {
+  list-style: decimal inside; }
+ol, ul {
+  padding-left: 0;
+  margin-top: 0; }
+ul ul,
+ul ol,
+ol ol,
+ol ul {
+  margin: 1.5rem 0 1.5rem 3rem;
+  font-size: 90%; }
+li {
+  margin-bottom: 1rem; }
+
+
+/* Code
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+code {
+  padding: .2rem .5rem;
+  margin: 0 .2rem;
+  font-size: 90%;
+  white-space: nowrap;
+  background: #F1F1F1;
+  border: 1px solid #E1E1E1;
+  border-radius: 4px; }
+pre > code {
+  display: block;
+  padding: 1rem 1.5rem;
+  white-space: pre; }
+
+
+/* Tables
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+th,
+td {
+  padding: 12px 15px;
+  text-align: left;
+  border-bottom: 1px solid #E1E1E1; }
+th:first-child,
+td:first-child {
+  padding-left: 0; }
+th:last-child,
+td:last-child {
+  padding-right: 0; }
+
+
+/* Spacing
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+button,
+.button {
+  margin-bottom: 1rem; }
+input,
+textarea,
+select,
+fieldset {
+  margin-bottom: 1.5rem; }
+pre,
+blockquote,
+dl,
+figure,
+table,
+p,
+ul,
+ol,
+form {
+  margin-bottom: 2.5rem; }
+
+
+/* Utilities
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+.u-full-width {
+  width: 100%;
+  box-sizing: border-box; }
+.u-max-full-width {
+  max-width: 100%;
+  box-sizing: border-box; }
+.u-pull-right {
+  float: right; }
+.u-pull-left {
+  float: left; }
+
+
+/* Misc
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+hr {
+  margin-top: 3rem;
+  margin-bottom: 3.5rem;
+  border-width: 0;
+  border-top: 1px solid #E1E1E1; }
+
+
+/* Clearing
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+
+/* Self Clearing Goodness */
+.container:after,
+.row:after,
+.u-cf {
+  content: "";
+  display: table;
+  clear: both; }
+
+
+/* Media Queries
+–––––––––––––––––––––––––––––––––––––––––––––––––– */
+/*
+Note: The best way to structure the use of media queries is to create the queries
+near the relevant code. For example, if you wanted to change the styles for buttons
+on small devices, paste the mobile query code up in the buttons section and style it
+there.
+*/
+
+
+/* Larger than mobile */
+@media (min-width: 400px) {}
+
+/* Larger than phablet (also point when grid becomes active) */
+@media (min-width: 550px) {}
+
+/* Larger than tablet */
+@media (min-width: 750px) {}
+
+/* Larger than desktop */
+@media (min-width: 1000px) {}
+
+/* Larger than Desktop HD */
+@media (min-width: 1200px) {}

exercises/devops/solutions/deploy_to_kubernetes/html/index.html

@@ -0,0 +1,45 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+
+  <!-- Basic Page Needs
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <meta charset="utf-8">
+  <title>Hello World :)</title>
+  <meta name="description" content="">
+  <meta name="author" content="">
+
+  <!-- Mobile Specific Metas
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <meta name="viewport" content="width=device-width, initial-scale=1">
+
+  <!-- FONT
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <link href="//fonts.googleapis.com/css?family=Raleway:400,300,600" rel="stylesheet" type="text/css">
+
+  <!-- CSS
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <link rel="stylesheet" href="css/normalize.css">
+  <link rel="stylesheet" href="css/skeleton.css">
+
+  <!-- Favicon
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <link rel="icon" type="image/png" href="images/favicon.png">
+
+</head>
+<body>
+
+  <!-- Primary Page Layout
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+  <div class="container">
+    <div class="row">
+      <div class="one-half column" style="margin-top: 25%">
+        <h1 style="color:red"><b>Hello World :)</b></h1>
+      </div>
+    </div>
+  </div>
+
+<!-- End Document
+  –––––––––––––––––––––––––––––––––––––––––––––––––– -->
+</body>
+</html>

exercises/devops/solutions/deploy_to_kubernetes/inventory

@@ -0,0 +1,2 @@
+[kubernetes]
+x.x.x.x

exercises/jenkins/jobs_101.md

@@ -0,0 +1,4 @@
+## Jobs 101
+
+1. Create a new job/pipeline
+2. Make sure every time the job is triggered it prints the current date

exercises/openshift/projects_101.md

@@ -0,0 +1,8 @@
+## OpenShift - Projects 101
+
+In a newly deployed cluster (preferably) perform and answer the following instructions and questions, using CLI only
+
+1. Login to the OpenShift cluster
+2. List all the projects
+3. Create a new project called 'neverland'
+4. Check the overview status of the current project

exercises/openshift/solutions/projects_101.md

@@ -0,0 +1,6 @@
+## Projects 101 - Solution
+
+1. Login to the OpenShift cluster -> `oc login -u YOUR_USER -p YOUR_PASSWORD_OR_TOKEN`
+2. List all the projects -> `oc get projects`(The output should be empty in a newly created cluster)
+3. Create a new project called 'neverland' -> `oc new-project neverland`
+4. Check the overview status of the current project -> `oc status`

exercises/python/advanced_data_types.md

@@ -0,0 +1,9 @@
+## (Advanced) Identify the data type
+
+For each of the following, identify what is the data type of the result variable
+
+1. a = {'a', 'b', 'c'}
+2. b = {'1': '2'}
+4. c = ([1, 2, 3])
+4. d = (1, 2, 3)
+4. e = True+True

exercises/python/compress_string.md

@@ -0,0 +1,8 @@
+## Compress String
+
+1. Write a function that gets a string and compresses it
+  - 'aaaabbccc' -> 'a4b2c3'
+  - 'abbbc' -> 'a1b3c1'
+2. Write a function that decompresses a given string
+  - 'a4b2c3' -> 'aaaabbccc'
+  - 'a1b3c1' -> 'abbbc'

exercises/python/data_types.md

@@ -0,0 +1,12 @@
+## Data Types
+
+For each of the following, identify what is the data type of the result variable
+
+1. a = [1, 2, 3, 4, 5]
+2. b = "Hello, is it me you looking for?"
+3. e = 100
+4. f = '100'
+5. i = 0.100
+6. i = True
+
+Bonus question: how to find out in Python what is the data type of certain variable?

exercises/python/reverse_string.md

@@ -0,0 +1,3 @@
+## Reverse a String
+
+Write a code that reverses a string

exercises/python/solutions/advanced_data_types_solution.md

@@ -0,0 +1,9 @@
+## (Advanced) Identify the data type
+
+For each of the following, identify what is the data type of the result variable
+
+1. a = {'a', 'b', 'c'} -> set
+2. b = {'1': '2'} -> dict
+4. c = ([1, 2, 3]) -> list
+4. d = (1, 2, 3) -> tuple
+4. e = True+True -> int

exercises/python/solutions/data_types_solution.md

@@ -0,0 +1,12 @@
+## Data Types - Solution
+
+1. a = [1, 2, 3, 4, 5] -> list
+2. b = "Hello, is it me you looking for?" -> string
+3. e = 100 -> int
+4. f = '100' -> string
+5. i = 0.100 -> float
+6. i = True -> bool
+
+### Bonus question - Answer
+
+`type(...)`

exercises/python/solutions/reverse_string.md

@@ -0,0 +1,16 @@
+## Reverse a String - Solution
+
+```
+my_string[::-1]
+```
+
+A more visual way is:<br>
+<i>Careful: this is very slow</i>
+
+```
+def reverse_string(string):
+    temp = ""
+    for char in string:
+        temp =  char + temp
+    return temp
+```

exercises/sql/improve_query.md

@@ -0,0 +1,10 @@
+## Comparisons vs. Functions
+
+1. Improve the following query
+
+```
+SELECT count(*)
+FROM shawarma_purchases
+WHERE
+  YEAR(purchased_at) == '2017'
+```

exercises/sql/solutions/improve_query.md

@@ -0,0 +1,9 @@
+## Comparisons vs. Functions - Solution
+
+```
+SELECT count(*)
+FROM shawarma_purchases
+WHERE
+  purchased_at >= '2017-01-01' AND
+  purchased_at <= '2017-31-12'
+```